The chemistry is a central science, because it provides support to other sciences such as physics, biology, geology, petrochemical, etc. . Also lets meet human needs in different areas or fields of human activity. We have:
1) In medicine : Chemistry helps with the synthesis of different drugs (antibiotics , analgesics , antidepressants, vaccines, vitamins , hormones , radioisotopes, etc. ) , for the treatment of many diseases and to improving general health .
2) Nutrition: The chemical synthesis allows calls flavoring and coloring to improve certain properties of food substances , and thus can easily be ingested ; preservatives for food not deteriorate in a short time ; also determines the critical chemical substances requires the body ( minerals, vitamins , proteins, etc. )
3) Agriculture: With chemicals like fertilizers and fertilizer soil productivity is increased, and is able to meet the needs of increasingly growing food. In addition to the use of insecticides, fungicides and pesticides, many diseases and pests that affect crop possession.
4) In the textile and clothing care . Chemical potentially help meet this need , Synthesizing many textile fibers ( rayon, Orlon , nylon) , dyes for dyeing, washing substances (soaps , detergents, etc) preservatives of natural and synthetic fibers , etc. .
5) Environment: Helps in the treatment and control of pollutants that affect our ecosystem (water, soil and air) , and the assistance of environmental disasters such as oil spills, acid rain fall , forest fires, etc. .
6) archeology : Determining age of fossils .
7) In mineralogy : Techniques for extraction and purification of metals .
8) Astronomy : chemical fuels for rockets , clothes and food concentrates for astronauts .
9) industry and metallurgy : metallurgy in chemistry is important because it will serve for the manufacture of alloys and / or resistant to the development of various material objects : cars, columns for housing construction , spacecraft, ships , etc .
10) agribusiness : chemistry is important in agribusiness by allowing retrieval of cement, iron, oil , glass, plastic , etc. . . and this is used by man.
Positive and negative aspects of chemistry :
We used products on the market that , years later , have shown a negative environmental impact. For example , chlorofluorocarbons used in air conditioners , refrigerators , etc. . , Have been synthesized compounds lot of bad things, to do drugs ( Ecstasy) , explosives ( trinitrotoluene ) , poisonous compounds , etc. .. The big concern the possibility that terrorist organizations around the world use chemical weapons.
Insulation as polyurethane up to 80% reduced energy consumption in a home. The widespread installation of insulation in Europe would avoid the emission of 370 million tons of CO2.La chemistry applied to drugs has allowed extending the average life expectancy to 80.9 years. Madrid , for example , chemical compounds 82.Los detergents reduced to 2 hours 16 basic tasks hogar.En cleaning industry , the combination of chemicals is obtained , for example , greater lightness of the planes ( up to 30% ) and therefore a great saving of fuel . In cars, 100 kg of plastics and synthetic rubbers replace 360 kg of metal varios.La substance application in gene therapy combined with stem cells will see, diagnose and treat cancer that starts in the decade now